Governor for gas-engines.



No. 662,730. Pate nted Nov; 27, won.

A. A. LA ZIER. GOVERNOR FOR GAS ENGINES.

(Application filed Jan. 18, 1900.)

(No Model.) 3 $heets-Sh'et l.

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- Patented Nov. 27, I900. A. A. LAZIER.

G 0VERNOB FOB GAS ENGINES.

(Application filed Jan. 18, 1900.)

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(No Model.)

A flow/L3 5 No. 662,730. Patented Nov. 27, 1900.

,7 A. A. LAZIER.

GOVERNOR FOR GAS ENGINES.

(Application filed Jan. 18, 1900.)

(No Model.) 3 SheetsSheet 3.

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ARTHUR A. LAZIER, OF BUFFALO, NEW YORK.

GOVERNOR FOR GAS-ENGINES.

QPEGIFICATION forming part of Letters Patent No. 662,730, dated November 27, 1900.

Application filed January 18, 1900. Serial No. 1,877. (No model.)

firstoutward stroke of the piston, compressed upon the first inward stroke of the piston, ignited and exploded upon the second outward stroke of the piston, and exhausted' upon the second inward stroke of the piston, and my invention more particularly relates to those governors which may be used upon any of the ordinary styles of such engines.

The main object of my invention is to secure the maximum degree of elficiency of the engine and the prevention of leakage and loss of fuel.

My improvements consist in certain novel features of construction, as hereinafter described and claimed.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying drawings, in which- Figure I is a top plan view of an Otto or fourcycle engine to which my improved governor is applied. Fig. II is a front view of my governor, the covering-plate being omitted. Fig. III is an axial section of the governor, the covering-plate being in place. Fig. IV is a rear view of the governor. Fig. V is a detail vertical section on the line V V, Figs. I, III, and IV.

1 is the base of the engine.

2 is the main cylinder.

3 is the exhaust-valve chest.

4 is the connecting-rod.

5 is the crank-shaft.

6 represents the fly-wheels on the crankshaft, and 7 is the reciprocating exhaust-valve rod carrying a spring 8, whereby it is pressed outward to cause it to hear at its outer end against my improved governor, which I will now describe.

9 is a support located on the base 1 of the engine adjacent to the crank-shaft 10 is a stud formed with an inner head 10 with a reduced part 10 having a circumferential or annular lubricant groove or channel 10 and radial inlet 10 therethrough and fitted in the support 9 and with a screw-threaded outer end 10, receiving a nut 11, whereby the stud 10 is rigidly secured to the support 9. Surrounding the stud 10, so as to rotate thereon, is a casing 12, formed at its inner part with a hub 12" with an annular rim 12, providing a trip-groove 12 between the hub 12 and the annular rim 12 and with a radial slot 12 in the Web 12 of the casing. The rim 12 is provided with a small peripheral starting-cam l2 and a large peripheral exhaust-cam 12 The outer part of the casing has a toothed rim 12 and a chamber 12 for a governing lever mechanism, hereinafter described in detail.

13 is a covering-plate for the chamber 12", removably secured by bolts 14 to the inner wall 12 of the outer part.

The stud 10 is also formed with an axial bore or opening 10", extending entirely through the same and screw-threaded at its outer end.

15 is a stem having an innerend 15 closely fitting the axial bore or opening 10, and an intermediate screw-threaded part 15 adjustable in the screw-threaded outer end of the axial bore or opening 10 The outer end of the stem is provided with a hand-wheel 16, formed with a boss 16, through which and the said outer end'a cross-pin 17 extends for securing the wheel to the stern. Located within the inner end of the axial bore or opening 10 is a pressure-pin 18, formed with'a conical bearing-point 18 and with a flat side 18", so as to leave a passage 19 between it .and the wall of the bore or opening 10 for the lubricant passing through the radial inlet l0 into the axial bore or opening 1O to the chamber 12 Within the axial bore or opening 10 between the stem 15 and the pressure-pin 18, is interposed a coil-spring 20 for forcing the pressure-pin inward.

21 is a gear-wheel on the crank-shaft 5 of the engine meshing with the toothed rim 12 of the governor, whereby the latter is rotated by the crank-shaft 5.

Also formed on the inner wall 12 of the outer part of the casing adjacent to the hub 12 areapair of ears or lugs 12, between which is supported by means of a pivot-pin 22 a bell-crank lever or shoe 23, which is provided with a plate 24, on which the conical bearing-point 18 of the pressure-pin 18 impinges, the plate covering the axial here or opening 10 of the stud 10. The bell-crank lever or shoe 23 carries a pin 25 near its heel, whereby it is coupled by a connecting-rod 25 to a cross-bolt 27, forming the pivot of a pair of segmental toggle-levers 26, fulcrumed near their pivoted ends by means of bolts 27 to the casing and having their free ends drawn together by a coil-spring 28, whose ends are 'detachably secured to the eyes 26,formed in the said free ends.

29 is an inner trip-rod extending across the chamber 12, projecting through the radial slot 12 in the web 12 of the casing, formed with a cam-head 29*and adapted to move radially in the trip-groove 12. This inner trip-rod 29 is secured by a washer 30 and a screw 30 to the outer ends of a pair of links recess 33 beneath the groove or channel 33 31, whereby it is reciprocated in the radial The links'3l are connected by pivot- 33 is a supportingblock formed wit-h a groove or channel 33in its top and a springand having a cap-plate 34 secured by the This su p porting-block to the stud-support 9.

located within the trip-groove 12, against which the cam-head 29 oftheinner trip-rod 29 is adapted to bear for operating the outer trip-rod 36. 'lhe'outer trip-rod 36 is also formed with a *laterally-projecting arm or stop 36.

' a coil-spring having'its inner end inserted 37 is a washer, and 38 is abolt secured to the outer trip-rod 36, hearing against the supporting-block, whereby the outer triprrod is limited in its inward movement, while 39 is in thespringrecess 33 and hearing at its outer endagainst the outer'cam-head 36 to press the latter inwardm 'The reciprocating exhaust-valve rod 7 is' provided with a pivplace by a stud 41 to the base l of the engine.

oted support 40, hinged at some convenient The upper end of this pivoted support is pro- "vided with ahead ,havinglateral outer and inner arms 40, carrying a cross-pin 42, upon which is loosely mounted a roller 43. The

"inner-arm 40 of the head 40 has i an extenor stop 36 44isa roller-shifting plat-e having-a slot 44 in' line with the lever-recess 40, supported on the head 40 and adapted tobe moved side- Wise by means of ahand-lever 45, inserted through the slot 44 intothe lever-recess 40 ecaveo The roller-shiftin g plate 44 has a pair of arms 44 extending across the ends of the roller, whereby the roller is moved laterally on the cross-pin 42.

The casin g revolves with the rest of the governor mechanism in consonance with the piston-strokes, the whole being in mesh with the gear-wheel 21 on the crank-shaft 5 of the engine. At thetime of the pistons fuel-charging stroke the section or part A of the annular rim 12 of the casing is in front of the roller43 upon the exhaust-valve rod 7, the

section or part B of the annular rim 12 at the time of the firsthalf of the pistons compression-stroke, the section or part 0 of the annular rim 12 at the explosion-stroke, and the section or part D of the annular rim 12 at the exhaust-stroke.

The purpose of the small peripheral starting-cam 12 on the annular rim 12 is to half reducethe compression of the engine, thus making it easier to start the engine upon its work.

As the valve-rod roller 43 is loosely mounted itcan be readily shifted back and forth laterally by means of the lever 45 and shift-ingplate 44, thus allowing the roller 43 when it is'in contact with the annular rim 12 to engage with the small starting-can1 12 By thus engaging with the small starting-cam 12 the compression is half reduced and the engine easily started.

After the engine is well started the roller 43 is returned to normal position, soas to be free of the starting-cam. The large exhaustcam operates on the roller 43 to open theexhaust-valve of the engine.

The lubricant groove or channel 10 around the stud "10 is connectedwith a-self-oiler(not shown) located at some suitable place onthe base ofthe engine,- and from the self-oiler the groove or channel is supplied with lubricant which passes easily and all of the inner part of the governing mechanism needing lubricant is supplied.

- The operation of my governor is as follows: The hand-wheel 16, with the stem-15-, being turned so as'to move inward, the stem 15 presses against the spring 20, which bears against the'pressurepin 18, causing the conical bearing-point 18 to push thejplate 24 and the outer arm of the-bell-crank lever or shoe 23 inward, which movement is transmitsegmental toggle-levers 26 apart,'while a slower motion will permitthem to approach each other. When the speed of: the engine increases above the normal, the segmental toggle-levers 26 are thrown-wide apart, and the links 31, moving with the segmental toggle-levers 26, draw the inner trip-rod 29, carrying the cam-head 21), away from the camhead 36 of the outer trip-rod 36. When the speed of the engine falls below normal, the

segmental toggle-levers are drawn toward each other by the action of the spring 28, and the links 31, carrying the inner trip-rod 29, force the latter out-ward, so as to bring its cam-head 29 in front of the cam-head 36 of the outer trip-rod 36. The outer trip-rod 3b is thus pushed from its seat, and its arm or stop 36 is withdrawn from in front of the extension 40 of the outer arm 40 of the head 40 of the exhaust-valve rod 7. The exhaustvalve rod 7 is then forced by its spring 8 inwardly toward the casing, and the roller 43 is caused to bear against the rim. of the casing and against the exhaustcam l2 thereon, which opens the exhaust-valve and allows the burned gases to escape. Upon the next stroke of the piston additional fuel is drawn into the cylinder. The exhaust-valve remains open as long as the roller 43 is traveling against the exhaust-cam 12 The roller 43 will be free to thus travel against the exhaust-cam 12 and annular rim 12 until the speed of the engine so increases as to draw away the inner trip-rod 29 from the outer trip-rod 36, when the arm or stop 36* will be placed in front of the extension 40 of the exhaust-valve rod 7 and arrest and restrict its outward movement, thus holding the roller 43 away from the casing of the governor and keeping the exhaust-valve open. Thus the speed of the engine is kept constant, and fuel is supplied as fast as necessary to carry the varying load required.

Having thus described my invention,.the following is what I claim as new therein and desire to secure by Letters Patent:

1. A governor'for gas-engines comprising a stud having an axial bore, a casing, having means whereby it is geared to an engine, mounted on the stud, and formed with a rim having an eXhaust- -camand with a radial slot in the web of the casing, an adjustable stem located in the axial bore, segmental toggle-levers pivotally supported in said casing, a bellcrank lever in said casing and having a plate located in engagement with the stem, a connecting-rod whereby the bell-crank lever is coupled to the segmental toggle-levers, an inner trip rod working in the radial slot and having a cam-head, links whereby the inner trip-rod is connected with the segmental toggle-levers, an exhaust-valve rod having an arm and a roller, an outer trip-rod arranged in the path of the exhaust-valve rod and provided with a cam-head and a stop, said camhead of the outertrip-rod being arranged for engagement with the cam-head of the inner trip-rod when the latter is in its normal position, and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaustvalve rod.

2. A governor for gas engines comprisinga stud having an axial bore, a casing, having means whereby it is geared to an engine, mounted on the stud and formed with a rim having an exhaust-cam and with a radial slot in the web of the casing, an adjustable stem, spring, and pressure-pin located in the axial bore, segmental toggle-levers pivotally supported in said casing, a bell-crank leverin said casing and having a plate on which the pressure-pin impinges, a connecting-rod whereby the bell-crank lever is coupled to the segmental toggle-levers, an inner trip-rod working in the radial slot, and having acam-head, links whereby the inner trip-rod is connected with the segmental toggle-levers, an exhaustvalve rod having an arm and a roller, an outer trip-rod arranged in the path of the exhaust-valve rod and provided with a camhead and a stop, said cam'head of the outer trip-rod being arranged for engagement with the cam-head of the inner trip-rod when the latter is in its normal outer position, and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaust-Valve rod.

3. A governor for gas-engines comprising a stud having an axial bore, a casing, having means whereby it is geared to an engine, mounted on the stud, and formed with a rim having a small starting-cam, and with a radial slot in the web of the casing, an adjustable stem located in the axial bore, segmental toggle-levers pivotally supported in said casing, a bell-crank lever in said casing and having a plate located in engagement with the stem, a connecting-rod whereby the bellcrank lever is coupled to the segmental toggle-levers, an inner trip-rod, working in the radial slot and having a cam-head, links whereby the inner trip-rod is connected with the segmental levers, an exhaust-valve rod having an arm and a roller, an outer trip-rod arranged in the path of the exhaust-valve rod, and provided with a cam-head and a stop, said cam-head of the outer trip-rod being arranged for engagement with the cam-head of the inner trip-rod when the latter is in its normal position; and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaust-valve rod.

4. A governor for gas-engines comprising a stud having an axial bore, a casing having means whereby it is geared to an engine, mounted on the stud and formed with a rim having a small starting-cam, a radial slot in the web of the casing, an adjustable stem, spring and pressure-pin located in the axial bore, segmental toggle-levers pivotally supported in said casing, a bell-crank lever in said casing and having a plate on which the pressure pin impinges, a connecting-rod whereby the bell-crank lever is coupled to the segmental togglelevers, an inner trip-rod working in the radial slot and having a camhead, links whereby the inner trip-rod is connected with the segmental toggle-levers, an

exhaust-valve rod having an arm and a roller, an outer rod arranged in the path of the exhaust-valve rod, and provided with a camhead and a stop, said cam-head of the outer trip-rod being arranged for engagement with the cam-head of the inner trip-rod when the latter is in its normal position; and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaust-valve rod.

5. A governor for gas-engines comprising a stud having an axial bore, a casing having means whereby it is geared to an engine mounted on the stud, and formed with a rim having an exhaust-cam and a small startingcam, and with a radial slot in the web of the casing, an adjustable stem located in the axial bore, segmental toggle-levers pivotally supported in said casing, a bell-crank lever in said casing, and having a plate located in engagement with the stem, a connecting-rod whereby the bell-crank lever is coupled to the segmental toggle-levers, an inner trip -rod working in the radial slot and having a camhead, links whereby the inner trip-rod is connected with the segmental toggle-levers, an exhaust-valve rod having an arm and a roller, an outer trip-rod arranged in the path of the exhaust-valve rod, and provided with a camhead and a stop, said cam-head of the outer trip-rod being arranged for engagement with the camhead of the inner trip-rod when the latter is in its normal position; a roller-shifting plate carrying the valve-rod roller, a handlever for moving the roller-shifting plate and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaust-valve rod.

6. A governor for gas-engines comprising a stud, a casing having means whereby it is geared to an engine, mounted on the stud and formed with a rim having an exhaust-cam and with a radial slot in the web of the casing, segmental toggle-levers pivotally supported in said casing, an inner trip-rod working in the radial slot and having a cam head, links whereby the inner trip-rod is connected with the segmental toggle-levers, suitable means for regulating the movement of the segmental toggle-levers, an exhaust-valve rod having an arm and a roller, an outer trip-rod arranged in the path of the exhaust-valve rod and provided with a cam-head and a stop, said camhead of the outer trip-rod being arranged for engagement with the cam-head of the inner trip-rod when the latteris in its normal outer position, and means arranged to press the outer trip-rod inward in position to bring its stop in engagement with the arm on the exhaust-valve rod.

In witness whereof I have hereunto set my hand, this 6th day of January, 1900, in the presence of two witnesses.

ARTHUR A. LAZIER.

Witnesses:

A. W. PLUMLEY, L. R. ROOT. 

